paths = [
    [(0.0, 0.0), (10.0, 0.0), (10.0, 10.0), (0.0, 10.0)],
    [(2.0, 2.0), (8.0, 2.0), (8.0, 8.0), (2.0, 8.0)],
    [(4.0, 4.0), (6.0, 4.0), (6.0, 6.0), (4.0, 6.0)],
]
out = polygon(paths).extrude(10)